Trigger mechanism



E. E. MILLER TRIGGER- MECHANISM May zo 1924. 1,494,753

Filed Jan. lO 1923 2 Sheets-Sheet 1 ELMER E. NHLUERv May 2o, 1924.1,494,753

E. E. MILLER TRIGGER MECHANI SM Filed Jan. lO 1923 2 Sheets-Sheet 2Patented May Z0, 1924.

- nutren srArEs ELMER E. MILLER,`OF MILLERSBRG, PENNSYLVANIA. i

TRIGGER MECHANISM. l

Application led January 10, 1923.

To all whom t may concern.'

' Be it known that I, ELMER E. MILLER, a citizen of the United States,residing at Millersburg, in the county of Dauphin and State otPennsylvania, have invented certain new and useful Improvements inTrigger Mechanisms, of which the following is a specification, referencebeing had to the accompanying drawings.

This invention relates to single trigger firing mechanisms for doublebarrel guns of that type wherein the trigger mechanism may be set tofire either barrel by a pull upon the trigger, a second pull upon thetrigger acting to iire the other barrel.

An importantfobject of the invention is to provide a novel and improvedtrip mechanism which may be set to cause tiring of either barrel upon aninitial actuation of the trigger and the firing of the second barrelupon a second actuation of the trigger, embodying a setting means .whichmay be employed to set the trip to fire either barrel as may be selectedupon such initial actuation, the setting means being such that when inthe neutral' position movement .of the trigger is positively preventedthereby. p

A still further object of the invention is to provide a trip of thischaracter including such a setting means wherein the operation of `thetrigger to bring the trip. into engagement with either of the searsofthe hammer, brings into play means whereby the operation of either ofthe sears will cause release of mechanism overcoming the action of thesetting mechanism and automatically setting the trip in a position toengage the vunreleased sear so that the second barrel may be fired.

Another object of the invention is to provide a device of this characterwhich iseX- tremely simple and which may be applied to practically allof those types of guns the sears of which are provided with'lugsoverhanging the trigger mechanism by means of c which they may betripped.

An additional object of the invention is .to provide a simple andimproved resetting mechanism whereby upon movement of the safety latchto its eXtreme forward position, the positioning of the settingmechanism for the firing trip in the neutral position and the locking ofthe trigger is automatically assured.

These and other objects I attain by the construction and arrangementshown in the Serial No. 611,738.

accompanying drawings wherein for the purpose of illustration is shown apreferred embodiment'o't my invention and wherein, like referencecharacters designate like parts throughout.

In the drawings Figure 1" is aside elevation showing a breech mechanismof a double barrel gun constructed'in accordance with my invention, thestockvr being shown in section;

v Figure 2 isa similar view of the op-posite side of the gun; i

.Figure 3 i's'a section on the line 3 3 of Figure 2;

Figure 4 isla sectional view on the line P-4' of Figure 2, the tripbeing shown in dotted ,lines in neutral position and in full lines inpositiony to operatev the right hand sear;

Figure 5 is-'a diagrammatic view showing in dotted linesthe trippositioned to operate the right hand sear and in full lines the resultof the operation of the right hand sear of the trip; i

Figure 6 is a View showing in dotted lines the trip positioned tooperate the left hand sear and 1in full lines the resulty of theoperation when the right hand sear is likewise beingv operated; and

Figure 7 isa detached detail view fully illustrafting the novel featuresof my invention.k f f Referring now more particularly to the drawings,jthe numeral'l() indicates a trigger plate ofa 'breech,mechanism, 11 atrigger mount'upon the upper surface of the plate and 12 a Vtriggerpivotedin the mount and operating through a slot formed in the plate.The numerals'13 and 14 designate sears extending rearwardly from thebreech plate 15 and operating in the usual manner to hold the hammers 16in the cocked position and to release the same when the sears have therear ends thereof moved in the direction in dicated by the arrow. W'henin cocked or firing position, the body portion 17 of the sears 13 and14- substantially parallel the upper surface of the trigger plate 10 inyslightly spaced relation thereto. Each sear 13 and 14 is provided at itsrear end with a tripping lug 18 extending over the rear end of thetrigger 12 in spaced relation thereto.

In accordance with my invention I form upon the trigger 12 beneath thetripping lugs 18 of the sears-a pair of lugs 19 between' which I pivot atrip 20. rI his trip is vproloo vided at each side thereof with an arm21 extending outwardly from the trip toward the adjacent side of thetrigger plate 10. These arms substantially parallel the trigger platewhen the trip is in central or vertical position. Secured to the triggerplate beneath each of the sears 13 and 14 and at a point spaced from therear end of the sear is a spring 22, this spring from its point 'ofcontact curving upwardly for engagement with the body 17 of itsassociated sear, as indicated at 23, and then slightly downwardly, thecurvature of the rear end of the spring being such thatV when the searis in released position, the rear end of the spring is in spacedrelation tothe trigger plate 10 and applies its tension to the overlyingarm 21 of the trip 20. Vhen, however, the sears are in the ycockedposition, these springs have the rear ends thereof flatly engagedagainst the trigger plate 10 and 'in spaced relation to the arms 21 ofthe trip 2O provided this trip be in the central or vertical positionabove referred to. Accordingly if the trip is shifted to one side andthe trigger employed to release one of the sears from thecockingposition, this sear during its upward movement will release itsassociated spring 22 so that the rear end thereof will bring its tensionto bear upon the associated arm 21 of the trip. The opposite arm 21 ofthe trip not being affected by the tension of'its associated spring 22is free to move' and the trip accordingly swings about its'pivot so thatthe head or engaging end thereof, indicated at 25, is positioned beneaththe tripping lug 18 of the other of the sears to engage thereagainst andoperate the same when the trigger is again actuated.

It will accordingly be obvious that if some setting mechanism beprovided whereby the trip may be initially moved to a position beneathone or the other of the sears so that upon movement of the trigger thesear will be released, means are provided for automatically shifting thetrigger trip to the other of the sears provided this setting mechanismis of such nature that it may be overcome by the action of the spring'22 which is thus released. Such a mechanism I have herein disclosed andis substantially identical with the corresponding mechanism describedand claimed in my co-pending application Serial No. 556,724, filed April26, 1922 for trigger mechanisms and safety devices therefor. Thismechanism embodies a plate or standard 26 vertically arranged upon thetrigger plate 10 immediately rearwardly of, the trigger opening thereofto which is ivoted upon a horizontal pivot and to swing ongitudinally ofthe plate 10 a setting member 27. This setting member embodies an arm 28engaged in an opening in an operating member 29 actuated through mediumof the usual thumb piece 30 located interiorly of the breech mechanismwhere it is convenient to access. This thumb piece as is usual, may beshifted to any one of three positions, a forward position where theright barrel is to be fired first, a central or neutral position wherethe gun is held from firing and the trigger against movement, and arearward position where the left hand barrel is initially fired and ismaintained in these positions by a resilient end 31 formed upon theoperating mechanism 29 having a lug 32 coacting with positioning notches33 formed in the upper breech plate of the breech mechanism. Accordinglyby the actuation of the thumb piece 30 the member 27 may be rotatedabout its pivot and arranged in any one of three positions correspondingto the right, safety and left positions of the thumb piece. The member27 further embodies a substantially horizontally and rearwardlyextending arm 84. This arm has secured thereto one end of a light spring35, the opposite end of which extends through and operates in an openingformed in the arm 21 at the corresponding side of the lug 20, theengagement of the spring in the opening being such as to permit slidingmovement of the spring through the opening but to prevent any but a verylimited vertical play therein.

This spring is so proportioned that when the member 27 is in thatposition corresponding to the safe position of the thumb piece 30, thetrip 2O is held in the central or vertical position above referred to.The spring 35 is further of such slight strength that it is readily`overcome by the tension of a spring 22 when released by its sear. Sincewhen the thumb piece 30 is in the neutral position the trip is verticaland the arms 21 accordingly horizontal, it will fol low that uponmovement of the thumb piece either forwardly or to the rear from l.thesafe position, the corresponding elevation or declination of the rearend of the arm 34 will cause a 'corresponding movement of the spring andthe spring engaged arm 21. If the thumb piece be moved rearwardly thearm is elevated and accordingly the spring engaged arm 21 is elevated.In the present instance l have illustrated the right hand arm 21 asbeing engaged by this spring and accordingly such rearward movementwould cause the trip to be inclined toward the left and assume aposition beneath the tripping lug 18 of the left hand sear 13 with theresult that if the trigger be pulled the left hand sear and hammer willbe op erated initially. If, however, the" thumb piece 30 be movedforwardly the arm 34 will be moved downwardly and the trip member 2Oaccordingly positioned to actuate the sear 14 initially. described, uponpulling of the trigger the release of the spring 22 compressed by the Ashereinbefore f-i li tilv the thumb piece is again moved. The'- lug 37ylikewise serves as a stop to limit the movement of the trigger into'forward or set position and has its upper surface cam shaped so that ifthe trigger is not fully depressed, the engagement o f thearmvtherewith`willv force the lug downwardly until f the trigger assumesthe proper position, thus overcoming to a great extent a quick or jerkyfiring, As is well known to those familiar with the art, small particlesof dirt Orfthe vlike or possibly'shreds of material loosened Afrom thegun butt will often get betweentwo portions bf the breech mechanismcausing the-trigger to assume a position slightly' rearwardlyof thatnormally assumed when released. The operator of the vgun in handling thesame naturally assumes that'the trigger is in the full forward or setposition f and accordingly will prematurely firethe vgun in squeezingthe trigger. This'fe'ature is entirely eliminated by* theV constructionhereinbefore set forth.v While I 'have illustrated a breech mechanism.as embodying a double firing preventer 38 such as disclosed in the priorapplication 4hereinbefore referred to, the same isnot hereinjclaimed, ordescribed, since the construction f thereof has been in no wisepatentably altered.

The numeral 39 indicatesas-a whole a common form of mechanism forlocking the barrels Bin the proper position with relation to the breechplate 15 and embodies" a substantially verticalshaft 4 0 rotatablymounted in the lbreech plate l5 and having at its lower end a crank 41which is engaged A with a locking 'bar 42" directed through thebreechgplate 15 longitudinally of the gun. The'shaft 39 is rotatedthrough medium of a thum'blever 48 and is normally held in one position'bymeans of a spring pressed lplunger 44, the spring olf' which abutssolidly against the upper plate of the breech `mechanism thro-ugh mediumof its housing 45. This shaft when in'its normal' position vthrough the`coaction of its crank4`l lwith thevlocking bar- 42 projects the lockingbar forward'lyfor engagement in al vnotch 46 formed in an integralextension 47-depending froml thebarrels B and which notch 46 lis'aligned with `the locking bar 42 when the barrels B are in theproperposition for firing with relation to the Ibreech plate 15. Whenthe lever 43 is moved to the dotted position shownin Figure 2 againstthe action of the spring pressed plunger 44, the bolt. or locking bar 42is retracted to the position shown in the dotted lines in this figureand the barrels released for oscillation to the reloading or chargeextracting position.

In accordance with my invention I form in the stockS of the gun a bore48 extending longitudinally of the stock and having its axis directedtoward the upwardly extending arm 28 of the setting mechanism andcommunicating with .a recess 49 in which this arm operates. The |bolt 42when in retracted position extends into a recess 50 formed in theforward end of the stock S and into this recess the forward end of a pin51 mounted in the bore 48 normally extends. The rear end of this pinabuts the arm 28 in a manner hereinafter more fully described and thepin is held against excessive movement by a notch 52 formed in the sidethereof and `which notch :receives the sleeve 53 surrounding the forwardstock pin 54 by meansy ofwhich the stock is secured to the breechmechanism. In addition to limiting the movement of the pin, the notchedengagementfof the pin with the sleeve prevents the pin from slippingfrom the stock when the stock is removed from the breech mechanism..

In the operation of vthe gun, when the thumb piece 30 is in the forwardposition, the engagement of the arm 28 withthe pin '51 has caused thesame tol be moved forwardly to its fullest extent within itsbore 48 andto project well into the recess 50 into which the ret-raction of thebolt causes the rear end of the bolt to be positioned. The projectionofthe pin 5l into the pathof movement of the bolt 42 is for a distanceequal to the distance through which` the arm 28 moves at its point ofengagement by the pin 51 in moving from the forward position to thesafety or neutral position. Accordingly, if the lever 43 is actuated tobreak7 the gun, the pin 4I is engaged by the bolt 42 and movedrearwardly and by its rearward movement, if the setting mechanisml be inthe forward position, moves the setting mechanism to such neutralposition, placing the gun in safety and preventing accidental firingthereof. It is well known to those familiar with the art thatpositioning at the intermediate of safety position is difficult, the lug32`in entering the notches 38 in order to move the same must havesuiicient power applied thereto to depress the same against the actionof the spring end 3l and this power is ordinarily sufficient to cause anentire shifting movement of the safety mechanism from oneextremeposition to the other. The operator must accordingly bevery-,careful in handling the gun since he isliab'le, 'instead ofpositioning it to safety position, to swing from one firing position tovanother with the result that the guny is ready for firing immediatelyupon relooking of the breech mechanism and is often accidentallydischarged. It will beV seen that by. the mechanism described no care isnecessary toposition the setting mechanism at the proper point. Theoperator afterfiring the gun may without looking at the sameengage-thethumb piece with his finger and force the same forwardly. If thesettingr mechanism is by this forward movement'merelyplaced in thesafety position, no action of the setting mechanism results fromthe-breaking ofthe gun. AIf, however, the movement is excessive and thesetting mechanism is in extreme `or forward position, the pin in itsrearward movement automatically .places the same inthe safety or neutralposition and assures against accidental firing.

If the setting mechanism beleft in the rearmost position or what inthepresent instance corresponds-'to the firingposition of the left handbarrel until the lgun be broken, attention is called to lthe -fact thatthe pin 5l will then serve as a stop and that while the gun is brokenandthe bolt withdrawn, the trip may `be shifted-to position the settingmechanism and will be limited by the pin 51 to theneutral position.Thus, the pin 51 serves withithe trip'in one position as an automaticset-ting device for the neutral position and when the trip is in theopposite position as a gauge to limit-the-movement of the settingmechanism.

I claim l. In a single trigger mechanism for double barrel guns, a pairlof sears, a trigger arranged between the sears, a sear trip pivotedupon the trigger for oscillation in a vertical plane extendingtransversely of said sears, an arm extending outwardly from each side ofsaid trip, springs for rengagement with said arms, said springs beingengaged and withdrawn from engagement with the arms upon movement of thesears to cocked position, and means for shifting said trip upon thetrigger to position the same for initial engagement with either of saidsears, said means for shifting the trip embodying a part yielding topermit shifting of the trip under the influence of either of saidsprings when released by its Sear.

2. In a single trigger mechanism for double barrel guns, a pair ofsears, a trigger arranged between the sears, asear trip pivoted upon thetrigger vand shiftable thereon to engage either of said sears to movethe same to operated position, a shifting mechanism forsaid trip wherebythe trip may be positioned to yengage ayselected sear, and

springs coacting with saidtrip and sears acting initially upon operationof a sear to assist the sear in its .movement to operated positionandthen coacting with said trip to shi-ft the tripupon the trigger toavposition for engagement with the other of the sears.

3. In a'single trigger mechanism for double barrel guns, a pair ofsears, a trigger arranged between the sears, a sear'trip pivoted uponthe trigger and shiftable thereon v.to engage either of said sears tomove the same to operated position, a shiftingmechanism for said tripwhereby the trip may be positionedto engage a selected sear, and springsco-acting with said trip and sears acting initially upon operation of aSear to assist the Sear in Vits movement to operated position and thencoacting with said trip to shift the trip upon the trigger to a`position for engagement with the other of the sears, said shiftingmechanism embodying a part yielding under the influence of the springreleased by a sear to permit shifting of the trip.

4. In asingle trigger mechanism for double barrel guns, a pair ofIsears, a trigger arranged between the sears, a sear trip pivoted uponthe trigger and shiftable thereon to engage either of said sears to movethe same to operated position, a shifting mechanism for said tripwhereby. the trip may be positioned to engage a selected sear, andsprings coacting with said trip and sears acting initially uponoperation of a sear to assist the sear in its movement to operatedposition and then coacting with said trip to shift the trip upon thetrigger to a position for engagement with the other of the sears, saidshifting mechanism embody/ing a part yielding under the influence of thespring released by a -sear to `permitfshifting of the trip, said partresisting such `yielding and returning the trip to its initial .positionupon retraction of the released spring.

5. In a single trigger mechanism for double barrel guns, a pair ofsears, a trigger arranged betweenv the sears, aspring'arranged beneatheach scar 4and .compressed thereby during its movement to cockedposition, a trip pivoted upon the trigger for oscillation to positionsengaging either of said sears, an arm extending outwardly from each sideof the trip, the ends of said arms being arranged over the ends of thesprings and being engaged by the springs when released by the sears, andmeans for shifting said trip upon the trigger to position the same forinitial engagement with either of the sears, embodying a part yieldingto permit shifting of the trip vunderthe influence of the springreleased by an operated sear.

6. In a' single triggermechanism for double barrel guns, a pair ofsears, a trigger arranged between the sears, a spring arranged beneatheach searV and compressed thereby during its movement to cockedposition, a trip pivoted upon the trigger for oscillation to positionsengaging either of said sears, an arm extending outwardly from each sideof the trip, the ends of said arms being arranged over the ends of thesprings and being engaged by the springs when released by the sears,-means for shifting said trip upon the trigger to position the same forinitial engagement with either of the sears, embodying a member mountedfor rotation, and a spring secured at one end to said member at a pointspaced from the pivot thereof and having its opposite end engaged withone of the arms of said trip, the last named spring being of lessstrength ythan either of the :first named springs.

7. In a single trigger mechanism for double barrel guns embodying theusual trigger sears and trip carried by the trigger, setting mechanismfor the trip for shifting said trip havingy a cam face coacting with thelower to a position where it engages either of the sears or to aposition intermediate the sears, said setting kmechanism including anarm extending in proximity to the trigger, and a lug carried by thetrigger above which the armpasses, said arm when the setting mechanismis in the intermediate position being aligned with said lug to preventmovement of the trigger, the upper -ace of said lug end of said armlover which the arm rides to insure placement of the trigger in setposition. i, f

l8. In single trigger mechanism for double barrel guns, a breechmechanism, barrels hingedthereto,a locking rbolt for the barrelsshiftable longitudinally of the gun to barrel locking or unlockingpositions, a trigger,

a pairfof sears, one for each barrel, sear tripping mechanism coactingwith the trigger, a setting mechanism for the tripping mechanism forsetting the same to coact with either of said sears, saidv settingmechanism coacting with :the trigger when in one.

position to lockk the ,trigger against move- *,within the boreintermediate ythe. settingV mechanism and bolt and shifted by said boltv lment to firing position, a stock havingka recess in which saidsetting mechanism operv,ates and aY second recess into which said bolt.extends when in the barrelunlock-ingfposiy tion,I a bore formed inthestock connecting Y said recesses, and a member reciprocable du-ring itsmovement to barrel locking-or f'barrel unlocking position forpositioning the setting mechanism in trigger locking-posi-M tion.

9. In y single trigger mechanisnrI for double barrel guns, a breechmechanism,v barrels hinged thereto, a locking k.bolt for,y the barrelsshiftable longitudinally of the gun to Ybarrel locking or unlockingpositions, -a trigger, a pair or` sears, one for 'Y eef-thbarrel. Seartripping ,mechanism ,c0-

acting with the trigger, a setting mechanism for the tripping mechanismfor setting the same toc'oact Iwith either of said sears, -said ysettingmechanism rcoacting with the trigger when in one position to lock thetrigger against movement to. firing position, a stock having a recess inwhich said setting mechanism operates and a second recess into whichsaid bolt extends when in the barrel unlocking position, a bore formedin the stock 'connecting said recesses, and a pin mounted in said boreand of a length equal to the distance between the rear `end of the boltvwhen in unlocking position and the engaged portion of the settingmechanism when in said trigger locking posi- Ytion, a Astock havinga'recess in whichk said setting mechanism operatesvand a second recess,into which saidibolt extends when in the barrel unlocking position, labore cesses,v and apin mounted in said bore andy of a length equal tothe distance between therea-r endof the bolt when in unlocking positionand the engaged portion ofy the setting mechanism when in said' triggerlocking position, and means for securing the stock to the'breechmechanism including a part carried by the stock and limitingl said pininits movementwithin the bore.

l1. yInra :single trigger mechanism `for double barrel guns, apair ofsears, atrigger\a searvtrip operable by ,the trigger and shiftable topositions where itis engageablewith y,either of, said ysearsuponmovement-ofthe trigger or to a position intermediateA saidlpositions,and'fselec'tive mechanism forshiftingftheftrip: to" any of saidpositions` for holding ,the sameJ therein including a part engaging thetrigger [upon .movement of-,thetrip from either of the -irstnamedpositions to theother of the first named positions orwfrom. either ofthe1first` named `positions to the last named position to shit the triggerto the fully set position."y Y

double barrel guns, a pair of sears, a trigmechanism for A`l2. Inkasingletriggerfmechanism for' `formed `in the stock l'connecting vsaidrerico i movement of the trigger, .and selective mechanism for shifting,the trip to either of said positions for holding the saine thereinincluding a part engaging the trigger upon movement of the selectivemechanism to shift lthe trip from either of said positions to the otherof said positions to force the trigger into set position.

13. In a single trigger vmechanism for double barrel guns, a pair ofsears, a trigger, a sear trip operable by the trigger and shiftable topositions Where it is engageable with either of said `sears uponmovement o-f the trigger or to a position intermediate -said positions,-selective mechanism for shifting the trip to any of said positions andfor holding the same therein including a part engaging the trigger upon-movement of the trip fromv either of the first named positions to theother; of the first named positions or fromeither of the first namedpositions to the last named position to shift the trigger to the fullyset position, and means operatedr by the breaking of the gun. When thelselective mechanism is positioned vto hold the trip in oneof the firstnamed positions for positively shifting the selective mechanism to thelast named position.

14. In a single trigger mechanism for double barrel guns, Va pair ofsears, a. trigger, a sear trip operable by the trigger and shiftable topositions Whereit is engageable lWitheitherY of said sears upon movementof the trigger or to a position intermediate said positions,'selectivemechanism for sliiftingthe trip ,to any of said positions for holdingthe same therein including a part engaging the trigger upon movementofthe trip from either of the first named positions to the other ofthefirst named -positionsor from either of' the first named positions-tothelast namedv position to shift the trigger to the fullyset position,yand. means operated by the breaking of the gun .when the selectivemechanism ispositioned to hold thel -trip in one ofthe first named.positions vfor positively shifting the selective mechanism to the lastnamed position, the selective mechanism when in the last named positionpositively locking the trigger against movement.

15. In a single trigger kmechanism for double barrel guns, a pairofsears, a trigger, a sear trip operable by the trigger and shiftable topositions Where it is engageable With either of said-sears upon movementof the trigger or to a position intermediate said positions, selectivemechanism for vshifting the .trip to any of` said. positions forlholding the same thereinincluding. a part engaging the` trigger. uponmovementzof Vthe trip ,from

either of theiirst named` positions totheV other of thefirstnamed.positions or from either of the first'named positions to the last namedYposition to shift the trigger to the fully set position, the selectivemechanism when in the last named position positively locking the triggeragainst movement.

16. In a single trigger mechanism for double barrel guns, a pair ofsears, a trigger, a sear trip operable by the trigger and shiftable topositions Where it is engageable With either of said sears upon movementof the trigger or to a position intermediate said positions, andselective mechanism for shifting the trip to any of said positionsincluding an arm, a cam carried b v the trigger and with which the armco-operates upon movement of the trip from either of the first namedpositions to the other of the first named positions or from either ofthe first named positions to the last named position toshift the triggerto the fully set position,

17. In a single trigger mechanism for,

double barrel guns, a pair of sears, a trigger, a sear trip operable bythe trigger and shift- `able Vto positions Where itis engageable Witheither of said sears upon movement of the trigger or to a positionintermediate said positions, and selective mechanism for shifting thetrip to any of said positions including an arm, a cam carried by thetrigger and with which the arm co-operates upon movement of the tripfrom either of the first named positions to the other of the first namedpositions or from either of the first named positions to the last namedposition to shift the-trigger to the fully set position, said arm Whenin the last named position being. positioned directly above said cam andpositively locking the trigger against movement.

18. vIn a single trigger mechanism for doiiblebarrel guns, a pairofsears, a trigger, a sear trip operated by the trigger and shiftable toengage and operate a selected sear upon initial operation of thetrigger, and means released by an operated sear engaging the trip andshifting the same to a position for engagement with the other sear, saidmeans acting to assist the 'Sear in its. movement to operated position.

19. In a single trigger mechanism for double barrel guns, a pair ofsears, a trigger, a Sear trip operated by the trigger and shiftable toengage and operate a selectedsear upon initial operation of the trigger,and a spring released by an operated sear engaging the trip and shiftingthe same to a position for engagement with the `other sear, said ldouble barrel guns, a pair of sears, a trigger,

a sea-r trip operated bythe trigger and shiftable to engage and operatea selected sear upon initial operation of the trigger, and means forshifting thetrip into position for engagement with either ofthe searsinclud- .ing a part coacting with the trigger during shifting of thetrip from a position to engage one sear to a position for engagementwith the other sear to Jforce the trigger into fully set position.

21. In a single trigger mechanism for double barrel guns, a pair ofsears, a trigger, a sear trip operated by the trigger and shiftable toengage and operate a selected sear upon initial operation of thetrigger, and means for shifting the trip into position for engagementwith either of the sears including a part coacting With the triggerduring shifting of the trip from a position to engage one sear to aposition for engagement With the other sear to force the trigger intofully set position, said part at a point intermediate said positionsoverlying the portion of the trigger with `Which it coacts to preventmovement thereof.

22. In a single trigger mechanism for double barrel guns, a pair ofsears, a trigger, a sear trip operated by the trigger and shiftable toengage and operate a selected sear upon initial operation of thetrigger, means for shifting the trip into position for engagement witheither of the sears including a part coacting with the trigger duringshifting of the trip from a position to engage one sear to a positionfor engagement With the other sear to force the trigger into fully setposition, said part at 'a point intermediate said positions overlyingthe portion of the trigger With which it ooacts to prevent movementthereof, and means operated by breaking of the gun for shifting saidpart to said position when the part is positioned .for initial operationof one of the sears and the gun is broken.

In testimony whereof I hereunto aix my signature.

ELMER E. MILLER.

